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-rw-r--r--debian/patches-rt/0015-serial-altera_uart-Use-port-lock-wrappers.patch116
1 files changed, 0 insertions, 116 deletions
diff --git a/debian/patches-rt/0015-serial-altera_uart-Use-port-lock-wrappers.patch b/debian/patches-rt/0015-serial-altera_uart-Use-port-lock-wrappers.patch
deleted file mode 100644
index 95e2c031f5..0000000000
--- a/debian/patches-rt/0015-serial-altera_uart-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,116 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:32 +0206
-Subject: [PATCH 015/134] serial: altera_uart: Use port lock wrappers
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
-
-When a serial port is used for kernel console output, then all
-modifications to the UART registers which are done from other contexts,
-e.g. getty, termios, are interference points for the kernel console.
-
-So far this has been ignored and the printk output is based on the
-principle of hope. The rework of the console infrastructure which aims to
-support threaded and atomic consoles, requires to mark sections which
-modify the UART registers as unsafe. This allows the atomic write function
-to make informed decisions and eventually to restore operational state. It
-also allows to prevent the regular UART code from modifying UART registers
-while printk output is in progress.
-
-All modifications of UART registers are guarded by the UART port lock,
-which provides an obvious synchronization point with the console
-infrastructure.
-
-To avoid adding this functionality to all UART drivers, wrap the
-spin_[un]lock*() invocations for uart_port::lock into helper functions
-which just contain the spin_[un]lock*() invocations for now. In a
-subsequent step these helpers will gain the console synchronization
-mechanisms.
-
-Converted with coccinelle. No functional change.
-
-Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-16-john.ogness@linutronix.de
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- drivers/tty/serial/altera_uart.c | 20 ++++++++++----------
- 1 file changed, 10 insertions(+), 10 deletions(-)
-
---- a/drivers/tty/serial/altera_uart.c
-+++ b/drivers/tty/serial/altera_uart.c
-@@ -164,13 +164,13 @@ static void altera_uart_break_ctl(struct
- struct altera_uart *pp = container_of(port, struct altera_uart, port);
- unsigned long flags;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- if (break_state == -1)
- pp->imr |= ALTERA_UART_CONTROL_TRBK_MSK;
- else
- pp->imr &= ~ALTERA_UART_CONTROL_TRBK_MSK;
- altera_uart_update_ctrl_reg(pp);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void altera_uart_set_termios(struct uart_port *port,
-@@ -187,10 +187,10 @@ static void altera_uart_set_termios(stru
- tty_termios_copy_hw(termios, old);
- tty_termios_encode_baud_rate(termios, baud, baud);
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- uart_update_timeout(port, termios->c_cflag, baud);
- altera_uart_writel(port, baudclk, ALTERA_UART_DIVISOR_REG);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- /*
- * FIXME: port->read_status_mask and port->ignore_status_mask
-@@ -264,12 +264,12 @@ static irqreturn_t altera_uart_interrupt
-
- isr = altera_uart_readl(port, ALTERA_UART_STATUS_REG) & pp->imr;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- if (isr & ALTERA_UART_STATUS_RRDY_MSK)
- altera_uart_rx_chars(port);
- if (isr & ALTERA_UART_STATUS_TRDY_MSK)
- altera_uart_tx_chars(port);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return IRQ_RETVAL(isr);
- }
-@@ -313,13 +313,13 @@ static int altera_uart_startup(struct ua
- }
- }
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Enable RX interrupts now */
- pp->imr = ALTERA_UART_CONTROL_RRDY_MSK;
- altera_uart_update_ctrl_reg(pp);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return 0;
- }
-@@ -329,13 +329,13 @@ static void altera_uart_shutdown(struct
- struct altera_uart *pp = container_of(port, struct altera_uart, port);
- unsigned long flags;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /* Disable all interrupts now */
- pp->imr = 0;
- altera_uart_update_ctrl_reg(pp);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- if (port->irq)
- free_irq(port->irq, port);